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31 lines
925 B
31 lines
925 B
#ifndef __KERN_FS_DEVS_DEV_H__
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#define __KERN_FS_DEVS_DEV_H__
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#include <defs.h>
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struct inode;
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struct iobuf;
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/*
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* Filesystem-namespace-accessible device.
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* d_io is for both reads and writes; the iobuf will indicates the direction.
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*/
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struct device {
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size_t d_blocks;
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size_t d_blocksize;
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int (*d_open)(struct device *dev, uint32_t open_flags);
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int (*d_close)(struct device *dev);
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int (*d_io)(struct device *dev, struct iobuf *iob, bool write);
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int (*d_ioctl)(struct device *dev, int op, void *data);
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};
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#define dop_open(dev, open_flags) ((dev)->d_open(dev, open_flags))
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#define dop_close(dev) ((dev)->d_close(dev))
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#define dop_io(dev, iob, write) ((dev)->d_io(dev, iob, write))
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#define dop_ioctl(dev, op, data) ((dev)->d_ioctl(dev, op, data))
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void dev_init(void);
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struct inode *dev_create_inode(void);
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#endif /* !__KERN_FS_DEVS_DEV_H__ */
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